/*
 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

#ifndef PORTASM_H
#define PORTASM_H

portSAVE_CONTEXT macro

        IMPORT pxCurrentTCB
        IMPORT usCriticalNesting

        /* Save the remaining registers. */
        push    r4
        push    r5
        push    r6
        push    r7
        push    r8
        push    r9
        push    r10
        push    r11
        push    r12
        push    r13
        push    r14
        push    r15
        mov.w   &usCriticalNesting, r14
        push    r14
        mov.w   &pxCurrentTCB, r12
        mov.w   r1, 0(r12)
        endm
/*-----------------------------------------------------------*/

portRESTORE_CONTEXT macro
        mov.w   &pxCurrentTCB, r12
        mov.w   @r12, r1
        pop     r15
        mov.w   r15, &usCriticalNesting
        pop     r15
        pop     r14
        pop     r13
        pop     r12
        pop     r11
        pop     r10
        pop     r9
        pop     r8
        pop     r7
        pop     r6
        pop     r5
        pop     r4

        /* The last thing on the stack will be the status register.
        Ensure the power down bits are clear ready for the next
        time this power down register is popped from the stack. */
        bic.w   #0xf0,0(SP)

        reti
        endm
/*-----------------------------------------------------------*/

#endif
